D-Link DU-H4 User manual

DU-H4

4-port USB Hub

User’s Manual

Rev. 01 (Oct. 2000)

Printed In China

INTRODUCTION

Thanks for purchasing the D-Link 4-Port USB

Hub. This easy plug and play external device

will allow your computer to connect to USB

interfaced monitors, printers, digital speakers,

modems, digital cameras, joysticks and other

USB devices.

Technology Overview

USB stands for Universal Serial Bus. It’s a

standard that has been adopted by leading

manufacturers within the computer industry to

define a new type of peripheral connection

scheme. It is designed to replace older parallel

and serial ports, cables, and connectors with

something faster and easier to use. USB is:

?? Easier --Windows 98, 2000, Me orMAC

OS will automatically recognize newly

installed devices.

?? Quicker -- You won’t have to reboot when

installing.

?? Faster -- Top USB data speed is around 100

times faster than a serial connection.

?? Greater Expandability -- Using USB hubs

you can connect up to 127 devices to your

computer.

?? Hot Swappable -- They just plug and play!

About the 4-Port USB Hub

The 4-Port USB Hub allows users to connect up

to four USB peripherals to their USB ready PC

or Mac.

The 4-port USB Hub is designed to provide

quicker and easier access to four type “A”

downstream ports for connecting peripherals

with USB support, USB hubs and other devices.

A single type “B” upstream port is provided for

connecting to the host computer, or another USB

hub.

Product Features

?? USB 1.1 specification compatibility

?? Plug-and-Play

?? Supports both OHCI and UHCI.

?? Supports Self-power mode.

?? Supports Bus-power mode.

?? Supports 1 upstream and four downstream

USB ports

?? One LED indicator for Self-power mode

?? One LED indicator for Bus-power mode

?? One LED indicator for each downstream

port status

?? Connects up to127 USB devices with

cascading hub.

?? Over-current and high-inrush current

protections

INSTALLATION

The 4-Port USB Hub is designed to be simple

and easy to install.

Application Diagram

Hardware Installation

1. Plug the included adapter into the rear of

the 4-Port USB Hub and an available

electrical outlet.

2. Plug the B-type connector into the

“Upstream Port”.

3. Plug the A-type connector into a computer

or USB Hub downstream port.

4. Connect USB devices to the Hub.

LED Indicators

The 4-Port USB Hub is equipped with LED

indicators:

Self-Power LED Indicator:

This indicator lights red when the USB Hub is

receiving power from external power source,

otherwise, it is off.

Bus-Power LED Indicator:

This indicator lights green when the USB Hub is

receiving power from USB bus, otherwise, it is

off.

Port status LED:

Per port has one status LED. When the LED

lights on, means the downstream port is working

successfully. Otherwise, the LED light is off.

USB Connector Pin Assignment

Receptacle A Series-A Plug

Receptacle B Series-B Plug

SPECIFICATIONS

Standards: USB Specification V.1.x compatibly

Data Speed: Low:1.5Mbps,High:12Mbps

LED indicators: 4-Port: Power x 2, Port status x 4

Upstreamport: Series-B Receptacle x 1

Downstream port:

4-Port: Series-A Receptacle x 4

Output Voltage: Per port DC +5V

Output Current: 4-Port: Per port 500mA

ExternalPower: power adapter

Dimensions: 67mm x 125mm x 23mm

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